Diarrhea before labor?

Jennifer
Sorry if this is tmi...I have been up since 1:30 with horrible stomach and back pains and diarrhea. I have had some contractions and BH mixed in there as well with period pain and my stomach hard as a rock. I read diarrhea can he the start of labor...did any of you ladies have thid before going into labor? I'm not due until June 5 so I'm 37w3d but have been measuring about 2 weeks ahead and was in the hospital at 35 weeks with regular contractions which is why I joined the May group.